THE MICROWAVE SPECTRUM AND STRUCTURES OF THE METHYLACTYLENE$\bullet SO_{2}$ COMPLEX
Loading...
Date
1994
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Ohio State University
Abstract
The microwave spectrum of the methylacetylene $SO_{2} (MA SO_{2})$ complex has been observed using a pulsed nozzle, molecular beam Fourier transformer microwave spectrometer. Two different large amplitude internal motions were observed. The methyl group internal rotation splits each rotational transition of the complex into A and E components; an $SO_{2}$ inversion motion further splits each A and E level into doublets. The structure of the complex was determined using the rotational constants of the normal species as well as MA $S^{18}O^{16}O$, and the dipole moment data. The $SO_{2}$ was found to sit above the carbon-dioxide triple bond, with its symmetry axis twisted away from parallel to the symmetry axis of the methylacetylene by about $60^{\circ}$. We are proceeding with the assignment of the E transitions and will report a global fit of all the rotational transitions.
Description
Author Institution: Department of Chemistry, University of Michigan